<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="item in cartInfoList" :key="item.id">
          <li class="cart-list-con1">
            <input type="checkbox" name="chk_list" @change="cutChecked($event,item)" :checked="item.isChecked==1">
          </li>
          <li class="cart-list-con2">
            <img :src="item.imgUrl">
            <div class="item-msg">{{item.skuName}}</div>
          </li>
          <!-- <li class="cart-list-con3">
            <div class="item-txt">语音升级款</div>
          </li> -->
          <li class="cart-list-con4">
            <span class="price">{{item.cartPrice}}</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" class="mins" @click="changeNum('reduce',item,-1)">-</a>
            <input autocomplete="off" type="text" minnum="1" class="itxt" @change="changeNum('change',item,$event.target.value*1)" :value="item.skuNum">
            <a href="javascript:void(0)" class="plus" @click="changeNum('add',item,1)">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{item.cartPrice * item.skuNum}}</span>
          </li>
          <li class="cart-list-con7">
            <a href="#none" class="sindelet" @click="delGood(item.skuId)">删除</a>
            <br>
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" type="checkbox" :checked="isAllChecked" @change="changeAllChecked($event)">
        <span>全选</span>
      </div>
      <div class="option">
        <a href="#none">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择
          <span>0</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">0</i>
        </div>
        <div class="sumbtn">
          <router-link class="sum-btn" to="/trade">结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import throttle from 'lodash/throttle'
import {mapState} from 'vuex'
  export default {
    name: 'ShopCart',
    data() {
      return {
        // goodNum:""
      }
    },
    created() {
      this.getShopCarData();
    },
    computed:{
      // ...mapGetters(["cartInfoList"]),
      ...mapState({cartInfoList:state=>state.shopCart.cartInfoList}),
      allPrice(){
        return this.cartInfoList.cartPrice * this.cartInfoList.skuNum
      },
      isAllChecked(){
        // return 1
        return this.cartInfoList.every(item=>item.isChecked==1);
      }
    },
    methods:{
      //发送仓库请求获取购物车列表
      getShopCarData(){
        this.$store.dispatch("getShopCartList");
      },
//改变商品数量
      changeNum:throttle(async function(type,item,num){
        // console.log(type,item,num,"前");
        switch(type){
          case'reduce': item.skuNum==1?num=0:num=-1;break;
          case'add': num=1;break;
          case'change': 
            if (isNaN(num)||num<1) {
              num=0;
            }else{
              num=parseInt(num)-item.skuNum;
            };
          break;
        }        
        // console.log(type,item,num,"后");
        let good={
          skuId:item.skuId,
          skuNum:num,
        }
        try {
          await this.$store.dispatch("getAddShopping",good);
          this.getShopCarData();
        } catch (error) {
          //
          console.log(error)
        }
      },500),
      //删除商品
      delGood(skuId){
        // console.log(skuId)
        try {
          this.$store.dispatch("delCheckGood",skuId);
          this.getShopCarData();
          console.log("操作成功！");
        } catch (error) {
          console.log('操作失败，请稍后重试！');
        }
      },
      //改变商品选中状态
      async cutChecked($event,item){
        console.log($event.target.checked);
        
          // let status={
          // skuId:item.skuId,
          // //不可以都使用item中的内容；例如下方如果使用item.isChecked去判断会出错（并不是这个问题，问题是下方的异步问题
          // //还有就是弄清楚逻辑关系
          // // isChecked:$event.target.checked?"1":"0",
          // isChecked:item.isChecked?"0":"1"
          // }
          // console.log(status);

          ///////////////////终于搞定了，都无语了，需要加上异步，再使用try cath去判断，否则getShopData会和cutGoodCheckedStatus同时调用，
          //，若是getShopData先一步完成则会导致出错！！！！
          try {
            await this.$store.dispatch("cutGoodCheckedStatus",{skuId:item.skuId,isChecked:item.isChecked?"0":"1"});
            this.getShopCarData();
            // this.getShopCarData();
          } catch (error) {
            console.log("失败")
          }
          // this.$store.dispatch("cutGoodCheckedStatus",{skuId:item.skuId,isChecked:item.isChecked?"0":"1"});
          // this.getShopCarData();
          // this.getShopCarData();
        
      },
      // 全选/全不选
      async changeAllChecked($event){
        console.log($event.target.checked);
        let checked=$event.target.checked?"1":"0";
        console.log(checked)
        try {
         await this.$store.dispatch("changeAllChecked",checked);
          this.getShopCarData();
        } catch (error) {
          console.log("请稍后再试试吧！")
        }
        
      },
    }
  }
</script>

<style lang="less" scoped>
  .cart {
    width: 1200px;
    margin: 0 auto;

    h4 {
      margin: 9px 0;
      font-size: 14px;
      line-height: 21px;
    }

    .cart-main {
      .cart-th {
        background: #f5f5f5;
        border: 1px solid #ddd;
        padding: 10px;
        overflow: hidden;

        &>div {
          float: left;
        }

        .cart-th1 {
          width: 25%;

          input {
            vertical-align: middle;
          }

          span {
            vertical-align: middle;
          }
        }

        .cart-th2 {
          width: 25%;
        }

        .cart-th3,
        .cart-th4,
        .cart-th5,
        .cart-th6 {
          width: 12.5%;

        }
      }

      .cart-body {
        margin: 15px 0;
        border: 1px solid #ddd;

        .cart-list {
          padding: 10px;
          border-bottom: 1px solid #ddd;
          overflow: hidden;

          &>li {
            float: left;
          }

          .cart-list-con1 {
            // width: 4.1667%;
            width: 15%;
          }

          .cart-list-con2 {
            width: 35%;

            img {
              width: 82px;
              height: 82px;
              float: left;
            }

            .item-msg {
              float: left;
              width: 150px;
              margin: 0 10px;
              line-height: 18px;
            }
          }

          // .cart-list-con3 {
          //   width: 20.8333%;

          //   .item-txt {
          //     text-align: center;
          //   }
          // }

          .cart-list-con4 {
            width: 10%;

          }

          .cart-list-con5 {
            width: 17%;

            .mins {
              border: 1px solid #ddd;
              border-right: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }

            input {
              border: 1px solid #ddd;
              width: 40px;
              height: 33px;
              float: left;
              text-align: center;
              font-size: 14px;
            }

            .plus {
              border: 1px solid #ddd;
              border-left: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }
          }

          .cart-list-con6 {
            width: 10%;

            .sum {
              font-size: 16px;
            }
          }

          .cart-list-con7 {
            width: 13%;

            a {
              color: #666;
            }
          }
        }
      }
    }

    .cart-tool {
      overflow: hidden;
      border: 1px solid #ddd;

      .select-all {
        padding: 10px;
        overflow: hidden;
        float: left;

        span {
          vertical-align: middle;
        }

        input {
          vertical-align: middle;
        }
      }

      .option {
        padding: 10px;
        overflow: hidden;
        float: left;

        a {
          float: left;
          padding: 0 10px;
          color: #666;
        }
      }

      .money-box {
        float: right;

        .chosed {
          line-height: 26px;
          float: left;
          padding: 0 10px;
        }

        .sumprice {
          width: 200px;
          line-height: 22px;
          float: left;
          padding: 0 10px;

          .summoney {
            color: #c81623;
            font-size: 16px;
          }
        }

        .sumbtn {
          float: right;

          a {
            display: block;
            position: relative;
            width: 96px;
            height: 52px;
            line-height: 52px;
            color: #fff;
            text-align: center;
            font-size: 18px;
            font-family: "Microsoft YaHei";
            background: #e1251b;
            overflow: hidden;
          }
        }
      }
    }
  }
</style>